There are two specifications for the oil pump. The fit to them both is identical, and you can switch them back and forth and have 100% correct function.

However;

The factory 01+ (and later, the 99-00 engine parts were superceded to the 01+ part for replacement purposes) oil pump housing and gears are 20 thousandths of an inch thicker than the factory replacement NA pumps. This means that the 99+ pumps will have (in theory) about a 1% increase in oil flow.

The stock bottom end is perfectly capable of handling 250rwhp, but consider the "engineers viewpoint" on that - at 250rwhp, you are at or above 90% of the physical limitations of the parts. The only time an engineer would ever design an engine to operate at 90% of its physical ability would be if the engine was designed with a very short lifespan - Example: racing applications where the engine is expected to be rebuilt after only a few races.

And then, the only reason to build an engine so that it runs at 90% is because you've decreased the weight (and as a side effect, the strength) of critical parts such as connecting rods/pistons/springs/valves/etc.

Just food for thought.

china rods ordered. I talked the guy down to $190 from 251. I feel pretty good about that.
working on some supertechs.

I already have a felpro head gasket. I have read some people raving about how terrible they are and others saying they are fine. if i grab some supertechs .5 overbore 8.6:1 is it a big deal if i just use that gasket or should i go with a cometic?

1.8 MLS or the felpro equivalent works great

You have been saved and eternal glory awaits.

I love you.

Now I have to drive my block back down to the machine shop in B.F.E. thanks.

That slope that everyone says is slippery. I just rolled my ass down it.

Well now that I've taken the plunge... Billet, supertechs, hbeam rods... I have another question. I've read on this before but all the threads with anything about this subject seem to kind of fade off without resolution. The general consensus is ACL but I've seen people mention clevite just have never heard an opinion on them or a testimony.

Bearings. I already have all new clevite bearings. When I do get to the upper boost levels are these going to be good enough to handle some nice power? I don't want my bearings to be my limiting factor on power here after i just upgraded my rods and pistons.

Clevite/Perfect Circle - Apparently these bearings are AL-3 I'm guessing some kind of aluminum blend...

MS1802AL - Main
TW472S - Thrust
CB1453AL - Connecting

I run stock mazda bearings and in theory, I make as much or more power than any other BP motor on this forum.

Maybe this means something good, maybe not.

in theory

I can ship you ACLs on Monday morning. They're the only thing we use.

I need me some of them there China rods too. Where did you get them at that price?
Any news on the Supertechs / price?

got the rods today. they all measured well and look to be of good quality. they were all really close in weight. they have the standard c.a.t. part number printed on them.

I ordered my supertechs and acl race bearings as well as arp head and main bolts. Since i'm so over budget I have been trying to penny pinch 5 here and there. I've saved about $175 between the rods, pistons, rings, arp bolts, bearings.

I asked what it would cost to have my motor rebuilt at a few shops and they all told me between 2k to 3k. Including the motor (bought a used one 99) I should be finishing the build around $2500 with it being mostly built. I say mostly because I only had a valve job done to the head. Nothing fancy. That includes all machine work and a flying miata 1.6 to 1.8 kit. So for about the same price + some of my time (which I have an abundance on depending on the week) it was def worth doing myself. For anyone that reads this if you do a real refresh and new rings, fresh hone, stock bearings, gaskets, oil pump, water pump, timing belt, pulley's, motor mounts, etc... you should expect to spend $800-$100 especially if you have a valve job done. If you just plan on patching something together then don't bother going in. just buy a used motor or even one of those japan motors shipped for 700-800 bucks and call it a day. I only mention this because it seems like every other day i see a "i'm broke and need to rebuild" thread. not that someone will actually search and find this.... anyway.

for anyone reading this and looking for acl racee bearings. Just buy them from sav and save yourself the trouble. they massively slowed production on them and are seriously ridiculous to track down. particularly the rod bearings. in the end i only saved like 20 bucks on the bearings and i spent a whole day calling every vendor verifying stock since nobody knows how to take a product off their site if it's not in stock. I'll make a build thread eventually. Also someone correct me if i'm wrong but basically ACL is the only company making the high performance bearings. EVERYTHING else is aluminum based. Unless you can somehow track down some celvite 77 "P" series that have been discontinued forever.

Basically just open your wallet and thank sav for saving your time and mind.

I've been looking all over the place for this and cant find anything. Is the top part of the 99-00 intake manifold same as the +01 manifolds? Visually it looks the same but i cant find a single pic of the insides. Bloody searches aren't showing any info nor have i found any pics of the 2 parts split up. Any one want to trade a gutted upper vics part?

No they can not be mixed/matched.

I have a port matched 01+ lower FS.

I need a 99-00 upper part :(